27:61
أَمَّن جَعَلَ ٱلْأَرْضَ قَرَارًۭا وَجَعَلَ خِلَٰلَهَآ أَنْهَٰرًۭا وَجَعَلَ لَهَا رَوَٰسِىَ وَجَعَلَ بَيْنَ ٱلْبَحْرَيْنِ حَاجِزًا ۗ أَءِلَٰهٌۭ مَّعَ ٱللَّهِ ۚ بَلْ أَكْثَرُهُمْ لَا يَعْلَمُونَ
Is He [not best] who made the earth a stable ground and placed within it rivers and made for it firmly set mountains and placed between the two seas a barrier? Is there a deity with Allah? [No], but most of them do not know.
Translation · Saheeh International
Tafsir
Ibn Kathīr (abridged)
أَمَّن جَعَلَ الاٌّرْضَ قَرَاراً
(Is not He Who has made the earth as a fixed abode,) meaning, stable and stationary, so that it does not move or convulse, because if it were to do so, it would not be a good place for people to live on. But by His grace and mercy, He has made it smooth and calm, and it is not shaken or moved. This is like the Ayah,
اللَّهُ الَّذِى جَعَـلَ لَكُـمُ الاٌّرْضَ قَـرَاراً وَالسَّمَآءَ بِنَـآءً
(Allah, Who has made for you the earth as a dwelling place and the sky as a canopy) (40:64).
وَجَعَلَ خِلاَلَهَآ أَنْهَاراً
(and has placed rivers in its midst,) means, He has placed rivers which are fresh and sweet, cutting through the earth, and He has made them of different types, large rivers, small rivers and some in between. He has caused them to flow in all directions, east, west, south, north, according to the needs of mankind in different areas and regions, as He has created them throughout the world and sends them their provision according to their needs.